A digitally controlled PLL for digital SOCs

Thomas Olsson, Peter Nilsson

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

A fully integrated digitally controlled PLL used as a clock multiplying circuit is designed and fabricated. The PLL has no off-chip components and it is made from standard cells found in most digital standard cell libraries. It is therefore portable between processes as an IP-block. Using a 0.35 μm standard CMOS process and a 3.0 V supply, the PLL has a frequency range of 152 MHz to 366 MHz and occupies an on-chip area of about 0.07 mm<sup>2</sup>. In addition, the next version of this all-digital PLL is described in synthesizable VHDL-code, which simplifies digital system simulation and change of process. A new time-to-digital converter with simulated resolution of 250 ps is made for the next PLL.
Original languageEnglish
Title of host publicationProceedings - IEEE International Symposium on Circuits and Systems
PublisherIEEE - Institute of Electrical and Electronics Engineers Inc.
Pages437-440
Volume5
DOIs
Publication statusPublished - 2003
EventProceedings of the 2003 IEEE International Symposium on Circuits and Systems - Bangkok, Thailand
Duration: 2003 May 252003 May 28

Publication series

Name
Volume5
ISSN (Print)2158-1525
ISSN (Electronic)0271-4310

Conference

ConferenceProceedings of the 2003 IEEE International Symposium on Circuits and Systems
Country/TerritoryThailand
CityBangkok
Period2003/05/252003/05/28

Subject classification (UKÄ)

  • Electrical Engineering, Electronic Engineering, Information Engineering

Free keywords

  • Digital systems

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